Agent for treating water repellency supply cloth and water repellency supply cloth

Abstract

A water repellency supply cloth supplying a water-repellent film having excellent persistency by a simple operation of polishing the body of a car or wiping out waterdrops after car washing is provided. A trimethyl siloxi silicate derivative having free hydroxyl groups is added to a dimethylpolysiloxane solution of trimethyl siloxi silicate expressed in the following formula (1) by 10 to 60 parts by weight with respect to 100 parts by weight of trimethyl siloxi silicate, and amino modified dimethylpolysiloxane, a surface active agent and/or fine powder is dissolved in an organic solvent or dispersed in water at need, to obtain an agent for treating a water repellency supply cloth according to the present invention. Cloth is impregnated with the agent for treating a water repellency supply cloth to contain a nonvolatile component corresponding to 1.0 to 50.0 parts by weight of the aforementioned agent for treating a water repellency supply cloth with respect to 100 parts by weight of the cloth, and thereafter a volatile component is vaporized to obtain the inventive water repellency supply cloth. [(CH 3 ) 3 SiO ½ ] X .[SiO 2 ] Y   (1) where X=1 to 3 and Y=0.5 to 8.

What is claimed is:  
     
       1. A water repellency supply cloth prepared by impregnating cloth with a nonvolatile component in an agent for treating a water repellency supply cloth containing an organopolysiloxane solution of trimethyl siloxy silicate expressed in the following general formula (1), containing a trimethyl siloxy silicate derivative having free hydroxyl groups: 
       
         
           [(CH) 3 SiO ½ ] x .[SiO 2 ] y   (1)  
         
       
       where X=1 to 3 and Y=0.5 to 8. 
     
     
       2. The water repellency supply cloth in accordance with claim  1 , wherein said agent contains amino modified dimethylpolysiloxane. 
     
     
       3. The water repellency supply cloth in accordance with claim  2 , wherein said agent contains a surface active agent. 
     
     
       4. The water repellency supply cloth in accordance with claim  3 , wherein said agent contains organic or inorganic fine powder. 
     
     
       5. The water repellency supply cloth in accordance with claim  1 , wherein said agent contains a surface active agent. 
     
     
       6. The water repellency supply cloth in accordance with claim  1 , wherein said agent contains organic or inorganic fine powder. 
     
     
       7. The water repellency supply cloth in accordance with any one of claims  1 - 6 , wherein said agent contains 10 to 60 parts by weight of said trimethyl siloxy silicate derivative for 100 parts by weight of said trimethyl siloxy silicate. 
     
     
       8. The water repellency supply cloth in accordance with claim  7 , wherein said cloth includes ultrafine fiber of less than 0.3 denier. 
     
     
       9. The water repellency supply cloth in accordance with any one of claims  1 - 6 , prepared by impregnating 100 parts by weight of said cloth with said nonvolatile component corresponding to 1.0 to 50.0 parts by weight of said agent for treating a water repellency supply cloth. 
     
     
       10. The water repellency supply cloth in accordance with claim  9 , wherein said cloth includes ultrafine fiber of less than 0.3 denier.